Valve-operating mechanism



Aug. 8, 1933. R. w. DINZL VALVE OPERATING MECHANISM Filed May 31, 1930man PRESSUQE 1 I l I I l INVENTOR- Rbclww WDinzl,

Patented Aug. 8, 1 933 UNITED STATES PATENT OFFICE Southwark Foundry &Machine Company,

Philadelphia, Pa., a Corporation of Pennsylvania Application May 31,1930; Serial No. 457,892 17 Claims. (01. 1617) My invention relates tomechanism for operating valves employed for the delivery of high and lowpressure fluid to hydraulic and similar apparatus, and one object of myinvention is to provide a low pressure valve and a high pressure valvein coordinated relation whereby operation of the low pressure valve,which may be effected manually, will load a spring (or springs); suchspring (or one of such springs, when a plurality are employed), servingsubsequently and at a predetermined time interval to operate a highpressure valve. When a plurality of springs are arranged to be loaded bythe operation of the lever actuating the low pressure valve, a secondspring at a still subsequent period of elapsed time may be arranged toopen the low pressure valve to exhaust and permit closing of the highpressure valve.

A further object of my invention is to provide electrical means fortripping the loaded spring (or springs) at predeterminedtime intervals.

And a still further object of my invention is to provide time cyclemeans in the form of a synchronous clock or equivalent mechanism wherebythe electrical operating means is automatically brought into action atdesired and predetermined intervals.

These and other features of my invention are more fully describedhereinafter; reference be-v ing had to the accompanying drawing, inwhich: Figure 1 is a view, more or less diagrammatic incharacter,showing in elevation valve mechanism forming the subject of my inventionand its relation to one form of hydraulic apparatus and in which aplurality of springs is shown; the low pressme valve being open for thepassageof low "pressure and both springs being illustrated in the loadedposition.

' Fig.2 is a view of the valve operating means illustrated in Fig. 1,showing the low pressure valve open to exhaust and both springsunloaded; such view also showing by dotted lines the position of certainof the parts before the springs act to move such parts, and a ingmechanism illustrated in Figs. 1 and 2.

In the drawing 1 may represent the low pres- I sure valve and 2 the highpressure valve. The so low pressure valve may be'ot three-way pistontype, andthe high pressure valve may be of twoway piston type. Anoperating lever 3 is ful- 1 crumed at 4, and this lever may be connectedat a to the stem 1*} of the low pressure valve; at b to a guided rod 5in operative engagement with a cated at D.

Fig. 3 is an end elevation of the-valve-operatspring 5 and at c to aguided rod 6 carrying a spring 6*.

The rod 5 is guided in a bracket 7 and slidably engages a tubular member8 mounted in a bracket 7 for horizontal movement with respect to thestem 2 of the valve 2; said tubular member having a stop or collar 8which may be engaged by a latch 9, operatively connected as by a link 9to the core 10of a solenoid A, and the rod 6 is guided in brackets 11and 11 and has a collar or stop 6 which may be engaged by a latch 12,operatively connected as by a link 12 to the core 13 of a solenoid B. v

A time cycle elemenhwhichmay be a synchronous clock such as indicated atC, Fig. 3, is in circuit with the solenoids A and B; such clock having amoving member 14 with suitable con tacts d and e that are engagedsuccessively at the end of predetermined time intervals. The contacts dand e are adjustable so that different time intervals may be arranged.

The lever 3 is arranged to close an electrical circuit for operating theclock or other time cycle element, when moved to the position indicatedin Fig. l, and for such purpose its lower end may be provided with aswitch bladeB adapted to engage contacts f and ,f'. The synchronousclock or other time cycle mechanism may be operatively connected tosuitable counting mechanism, indi- In operation, the low pressure valveis opened by the operator upon moving the lever 3'to the position'shownin Fig. l, and this action serves to load the spring 5', and, whenemployed, the spring 6 also. The spring 5 lies between a collar 5 on therod 5 and the stop or collar 8, and the spring 6 when employed-may liebetween a stop 6 at the end of rod 6 and the bracket 11; suchsprings-being held in the loaded position by the pawls or latches 9 and12.. when the predetermined time interval for delivery of low pressurehas been reached and high pressure is to be delivered, a circuit isclosed by the member 14 and the contact (1 through the operation of thetime cycle element or clock C, which efiects energization of thesolenoid. A, and its lifting core 10 raises the latch or pawl 9releasing the tubular member 8 and permitting the spring 5 to move saidtubular element into engagement with the stem 25 of the high pressurevalve 2' whereby said valve may be opened for the passage of highpressure to the mechanism employing the same.

As the clock continues its operation, a second circuit may be arrangedto be closed by engage ment of the member Maud the contacte and,

70 valve, a spring simultaneously when the spring 6 is employed, theclosing of such second circuit effects energization of the solenoid Band its lifting core 13 raises or releases the latch or pawl ,12 andpermits the spring 6 to 5 move the rod 6 and actuate the lever 3 andopen the low pressure valve 1 to exhaust. At the same time the spring 5'is free to retract; permitting the high pressure valve to closeautomatically.

In lieu of using a spring such as that indicated 10 at 6 for the purposeof shifting the lever, this lever may be moved manually and'the clock orother time interval mechanism may be employed to give a signal to theoperator for the time of such movement or he may watch the same for theexpiration of the time interval during which the high pressure is on andthen shift the lever 3; thereby opening the low pressure valve toexhaust and permitting the high pressure valve to close. 'I'he lowpressure and high pressure lines will be provided with check valves.

Each solenoid will be deenergized following the lifting of the severallatches or pawls so that the latter may be in position to engage therespective stops or collars when the springs are loaded for 25. furtheroperation of the valve mechanism. When the spring 6* is omitted, thesolenoid B and its circuit may also be omitted.

It will be understood of course that while ordinary clock mechanismcoordinated with standard time may be employed, any mechanism that isemployed will be oi a type that will'eifect intermittent movements atregular intervals of any suitable member that may be employed asacircuit closer, the member 14, for instance, and in which the number ofsuch movements over any period of elapsed time may be altered or changedat will; the contacts. :1 and e being adjustable, to insure operation ofthe valves at the desired time inte 9.13 after the low pressure valvehas been manually operated. As illustrated, the time intervals providefor a-single complete clockwise movement of the member. 14.

I claim: J 1. In a valve operating mechanism, the combination of a lowpressure valve, a high pressure valve, a lever for operating the lowpressure valve, a spring simultaneously loaded upon the operation ofsaid lever; said spring serving to open the high pressure valve whenreleased, a. latch for holding said spring in the loaded condition,

and means for actuating said latch at a predetermined time intervalwhereby the fiow of high pressure may follow the flow of low pressure ata predetermined moment. V

2. In valve operating mechanism, the combination of a low pressurevalve, a high presssure valve, a lever for operating the low pressurevalve, aspring simultaneously loaded upon the operation oi. said lever;said spring serving to open the high pressure valve when released, alatch for holding said spring in theloaded condition, and electricalmeans for actuating said latch at a predetermined time interval wherebythe 5 flow 01' high pressure may follow the flow of lowpressure at apredetermined moment.

3. In valve operating mechanism, the a combination of a low pressurevalve, a high pressure .valve, a lever for operating the low pressureloaded upon the operation 01 said lever; said spring serving to open thehigh pressure valve when released, a latch for holding said spring inthe loaded condition, electrical means for actuating said latch at apredetermined time interval whereby the flow 01' high pressure mayfollow the flow of low pressure at a predetermined moment, and timeinterval mechanism controlling the operation of said electrical means.

" 4. In valve operating mechanism, the combination of a low pressurevalve, a high pressure valve, a lever for operating said low pressurevalve, a spring simultaneously loaded upon the operation of said lever;said spring serving to open the high pressure valve when released, aslidable member operated by said spring for engaging and opening thehigh pressure valve, a latch for holding said spring in the loadedcondition, and electrical means for actuating said latch at apredetermined time interval whereby the'flow of high pressure may followthe flow of low pressure at a predetermined moment.

,5. In valve operating mechanism, the comination of a low pressurevalve, a high pressure valve, a lever" for operating the low pressurevalve,- a spring simultaneously loaded upon the operation of said lever;said spring serving to open the high pressure valve when released, alatch for holding said spring in the loaded condition, an electriccircuit, time interval mechanism in said circuit, means carried by theactuating lever for closing the circuit of the time interval mechanism;the latter having a movable circuit-closing member, a solenoid foroperating said latch; said solenoid being in an independent circuit, anda contact arranged for engagement by the circuit-closing member of saidtime interval mechanism whereby said solenoid circuit may be energizedto release the latch at a predeterminedtime interval and permit saidspring to actuate the high pressure valve to open position whereby theflow of high pressure may follow the, flow 01 low pressure at apredetermined moment; said solenoid being deenergized upon the continuedmovement 01' of the time interval mechanism.

6. In valve operating mechanism, the combination oi. a low pressurevalve, a high pressure valve, a lever for operating the low pressurevalve, a spring simultaneously loaded upon ac- I tuation of said lever;said spring serving to open the high pressure valve when released, alatch for holding said spring in the loaded condition, an electricalcircuit, time interval mechanism in said circuit, means for closing saidcircuit upon operation of the actuating lever, a solenoid in a secondcircuit, and a circuit-closing member actuated by said time intervalmechanism for closing said second circuit and energizing said solenoid;the latter releasing the latch holding the spring for opening the highpressure valve the circuit-closing member whereby the flow of highpressure may follow the flow of low pressure at a predetermined moment;said solenoid being deenergized following release of said latch.

7. In valve operating mechanism,'the combination of a low pressurevalve, a high pressure valve, a lever for operating the low pressurevalve; a pair of springs simultaneously loaded upon the operation ofsaid lever; one of said springs serving to open the high pressure valvewhen released and the other spring serving to open the low pressurevalve to exhaust when released, latches for holding said springs in theloaded condition, and means for actuating said latches successively atpredetermined intervals whereby the flow of high pressure may iollow.the

flow of low pressure at a predetermined moment and the low pressurevalve may be opened to ex-- haust at a successive and predeterminedmomeat.

8. In valve operating mechanism, the combination of a low pressurevalve, a high pressure valve, a lever, for operating the low pressurevalve, a pair of springs simultaneously loaded upon the operation ofsaid lever; one of said springs serving to open the high pressure valvewhen released and the other spring serving to open the low pressurevalve to exhaust when released, latches for holding said springs in theloaded condition, and electrical means for actuating said latchessuccessively at. predetermined intervals whereby the flow of highpressure may follow the flow of low pressure at a predetermined momentand the low pressure valve may be opened to exhaust at a successive andpredetermined moment.

9. In valve operating mechanism; the combination of a low pressurevalve, a high pressure valve, a lever for operating the low pressurevalve, 'a pair of springs simultaneously loaded upon the operation ofsaid lever; .one of said springs serving to open the high pressure valvewhen released and the other spring serving to open the low pressurevalve to exhaust when released, latches for holding said springs in theloaded condition, electrical means for actuating said latchessuccessively'at predetermined intervals whereby the flow of highpressure may follow the flow of low pressure at a predetermined momentand the low pressure valve may be opened to exhaust at a successive andpredetermined moment, and time interval mechanism controlling theoperation of said electrical means.

10. In valve operating mechanism, the combination of a low pressurevalve, a high pressure valve, a lever for operating said low pressurevalve, a pair of springs simultaneously loaded upon the operation ofsaid lever; one of said springs serving to open the high pressure valvewhen released and the other spring serving to open the low pressurevalve to exhaust when released, a slidable member operated by the firstmentioned spring for engaging and opening the high pressure valve,latches for holding said springs in the loaded condition, and electricalmeans for actuating said latches successively at predetermined intervalswhereby the flow of high pressure may follow the flow of low pressure ata predetermined moment and the low pressure ,valve may be opened toexhaust at a successive and predetermined moment.

11. In valve operating mechanism, the combination of a low pressurevalve, a high pressure valve, a lever for operating said low pressurevalve, a pair of springs simultaneously loaded upon the operation-ofsaid lever; one of said springs serving to open the- High pressure valvewhen released and the other spring serving to open the low pressurevalve to exhaust when released, a slidable member operated by the firstmentionedspring for engaging and opening the high pressure valve,latches for holding said springs in the loaded condition, electricalmeans for actuating said latches successively at predetermined intervalswhereby the flow of high pressure may follow'the flow of low pressure ata predetermined moment and the low pressure valve may be opened toexhaust at a successive and predetermined moment, and time intervalmechanism controlling successively the operation of the electrical meansreleasing said latches.

12. In valve operating mechanism, the combination of a low pressurevalve, a high pressure valve, a lever for operating the low pressure.valve, a pair ofglsprings simultaneously loaded upon the operation ofsaid lever; one of said springs serving to open the high pressure valvewhen released and the other spring serving to open the low pressurevalve to exhaust when released, latches for holding said springs in theloaded condition, a series of electric circuits, time interval mechanismin one of said circuits, means carried by the actuating lever forclosing the circuit of the time interval mechanism; the latter having amovable circuit-closing member, solenoids for operating said latchessuccessively; said solenoids being in independent circuits; and

contacts arranged for successive engagement by the circuit-closingmember of said time interval mechanism whereby said solenoid circuitsmay be energized to release'the latches successively at predeterminedintervals; said solenoids being successively deenergized upon thecontinuedmovement of the circuit-closing member of the time intervalmechanism; the first solenoid releasing the latch for the spring servingto actuate the high pressure valve to open position and the secondsolenoid releasing the latch for the spring serving to actuate the lowpressure valve to exhaust position.

13. In valve operating mechanism, the combination of a low pressurevalve, a high pressure.

valve, a lever for operating the low pressure valve, a pair ofindependent springs simultaneously loaded upon actuation of said lever;one of said springs serving to open the high pressure valve whenreleased and the other spring serving to open the low pressure valve toexhaust when released, independent latches for holding said springs inthe loaded condition, a series of electrical circuits,-time intervalmechanism in one of said circuits; means for closing said latter circuitupon operation of the actuating lever, a solenoid in a second circuit, acircuit-closing member actuated by said time interval mechanism forclosing said second circuit and energizing said solenoid; the latterreleasing the latch holding the spring for opening the high pressurevalve, a second solenoid in a third circuit; said circuitclosing memberof the time'interval mechanism closing said last-mentioned circuit at apredetermined time interval after closing the circuit of the firstsolenoid; the latter being deenergized following release of thefirst-mentioned latch and the energization of the second solenoidreleasing the latch holding the spring for actuating the low pressurevalve to exhaust position.

14. In valve operating mechanism, the combination of a low pressurevalve, a high pressure valve, a lever for operating the low pressurevalve, a pair of independent springs simultaneously loaded uponactuationof said lever, slidable rods upon which said springs aremounted operatively connected to said lever, stops carried by said rodsengaging said springs; one of said springs serving to open the highpressure valve when released and the other spring serving to open thelow pressure valve to exhaust when released, independent latches inengagement with the stops of said rods for holding the respectivesprings in the loaded condition, a series of electrical circuits, timeinterval mechanism in one of said circuits, means for closing saidlatter circuit upon operation of the actuating lever, a solenoid in asecond circuit, a circuit-closing member actuated by said time intervalmechanism for closing said second circuit and energizing saidlsolenoid;the latter releasing the latch holding the spring for 'opening thehigh'pressure valve, a second solenoid in a third circuit; saidcircuit-closing member of the time interval mechanism closing saidlast-mentioned circuit at a predetermined time after closing the circuitof the first solenoid; the latter being deenergized following releaseof. the firstmentioned latch and the energization of the second solenoidreleasing the latch holding the spring for actuating the low pressurevalve to exhaust position.

15. In valve mechanism for controlling high and low pressures, thecombination of a valve casing, a valve therein having a projecting stem,a pivotally mounted lever operatively connected to said stem, a slidingmember paralleling the valve stem andioperatively connected to saidlever, means for holding said sliding member against movement when thelever has been moved to open the valve, means for releasing said slidingmember at apredetermined time interval, means for actu ating saidsliding member whereby the lever may be operated to close the valve,- asecond valve mechanism operatively connected .to said lever foreffecting actuation of the same; said means including a spring, meansfor holding said spring when actuated by said lever, and means forreleasing said spring at a predetermined time interval.

16. The combination of a valve casing, a valve mounted therein having aprojecting stem, a pivotally mounted lever operatively connected to saidvalve stem, a rod paralleling said valve stem and operatively connectedto said lever, a spring for actuating said rod whereby said lever maymove the valve to closed position, a latch in engagement with said rod,means for releasing said latch at a predetermined time interval, asecond valve, mechanism operatively connected to said lever foractuating the same, releasable means for holding said actuatingmechanism, and means for releasing said holding mechanism wherebyactuation of said second valve may be eilected at a predetermined timeinterval.

1'7. The combination of a valve casing, a valve mounted therein having aprojecting stem, a pivotally mounted lever operatively connected to saidvalve stem, a rod paralleling said valve stem and operatively connectedto said lever, a spring for actuating said rod whereby said lever maymove the valve to closed position, a latch in engagement with said rod,means for releasing said latch at a, predetermined time interval wherebythe spring may actuate said rod and lever, a second valve, mechanismoperatively connected to said lever for en'ecting actuation of the same;

said means including a spring. a latch for holding said mechanism whenactuated by said lever, and means for releasing said latch andpermitting actuation 01' said spring to operate said second valve at apredetermined time interval.

RICHARD W. DINZL.

